Top Definition
This is the ratio of how many times you can sex a girl before your penis becomes like a wet noodle.

If you can sex a girl like 3 times within 3 hours and then your penis becomes a wet noodle, your noodle ratio is 3:1.
Oh man, my noodle ratio has gone up since last year, now I got a 10:1 noodle ratio!
by rayjay April 04, 2006

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